Want to receive product discounts and updates? Get it Here!

Onan Generators Oil Type

* This site contains affiliate links for which we may be compensated.

When it comes to selecting the right oil for your Onan generator, the type of oil you choose can have a huge impact on the performance of your machine. The wrong oil type can cause your generator to run inefficiently, leading to costly repairs and maintenance issues. In this article, we’ll take a closer look at the different types of oil available for Onan generators, we will provide some tips on determining the best oil type to use and how to change it.

What kind of oil is best for Onan generators?

If you have just purchased a new Onan generator, it is important to use the right oil in order to get the most out of your generator and keep it in optimal working condition. The best oil to use for your new Onan generator would be an SAE 30W viscosity oil. This type of oil is specially designed for use in engines that frequently operate in extreme temperatures environment. It has the ability to stay thick when the engine is cold, while still remaining thin enough to keep the engine lubricated when hot.

Type of Oil for Onan Generators

The selection of oil for an Onan Generator should be based on the prevailing outdoor temperature in the environment in which it is being used. For areas that have temperatures below 32 degrees F, it is important to use thicker oils such as 15W40, 10W30, or 10W40. In extremely cold temperatures, you can even drop down to 5W30 or 5W40 oil in order to ensure that the engine is able to start and function properly. These grades are specifically designed for areas with very cold weather and will provide better protection for your engine in these temperatures.

Additionally, it is important to check the generator regularly and top up the oil if necessary, in order to keep it in good condition.

Onan Generators Oil Change Guide

Changing the oil on an Onan generator is not the same as changing the oil on your car. There are some differences and here are the basic steps to follow:

How to drain oil on Onan Generators
• First, allow the generator to run for a brief duration to preheat the oil. The generator should remain active for no more than five minutes for optimal preheating.

• Once the generator has warmed up, utilize a T30 Torx bit to remove the green protection plate from the oil drain plug located under the generator.

• In the next step you can easily remove the pesky drain plug with a swift twist of a 9/16 socket.

• Then, let the oil drain into an oil pan. If your generator has an oil filter, you need to remove it at this time and replace it with a new one.

• Once the oil is out, put a little sealant on the plug and screw it back in. Just do not over-tighten it.

How to put oil on Onan Generators
To put oil in your Onan Generator, follow the steps above and fill the generator with 1.6 quarts of Onan-approved oil, and start the engine. Check the oil drain plug to ensure no leaking. If there is no leaking, the urn off the engine and the replace oil drain plug protector. Make sure that you do not overfill the oil tank.

Depending on the weather conditions and model of your Onan generator, approximately 1 quart of oil can be used up every 50 hours of operation. Some models may even be more economical, with a consumption of only 1/2 quart per 75 hours.

How often should you change the oil on Onan Generators?
Performing regular oil changes on your Onan generator is important for keeping your generator functioning properly. Onan RV recommends changing the oil every 100 hours or once a year, whichever comes first. It only takes about 20 minutes and you will be good to go for the season. Also, be sure to run your generator for at least an hour every month. While exercising your generator, turn on a few electrical components so that it has an electrical load on it.

How to check the Onan Generators oil level
To check the oil level in your Onan generator, follow the step as described above and check the oil level using the dipstick at the oil fill location. Wipe any oil from the generator and properly dispose of the used oil. It is a good time to also check the generator’s air filter. Remember to read the owner’s manual as your generator may be different and require additional steps.

How to do a generator oil change on a Onan 5500 generator.

Onan Generators are reliable pieces of machinery that can be used to provide power to a wide range of applications. Most Onan Generators come with specific oil requirements, so it is important to consult the owner’s manual for specific oil recommendations for your generator. Additionally, when selecting the proper oil type for your Onan Generator, it is important to consider the type of generator and the environment in which it is being used.

Leave a Comment

First Name:

E-Mail: (will NOT be publish)


Please note: Generatorstop.com is only a "guide/resource" website and we are NOT associated with any of the companies or products listed here.